Medium 5.5Published May 27, 2026

CVE-2026-46103can: ucan: fix devres lifetime

Updated under an hour ago (Oct 26, 2026, 4:40 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: can: ucan: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the control message buffer lifetime so that it is released on driver unbind.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 9f2d3eae88d26c29d96e42983b755940d9169cd9 before a90f0815aaa9c629ac4750e7c71c357dd7f231d7; from 9f2d3eae88d26c29d96e42983b755940d9169cd9 before cb2e41e87a2893345859440017e7178bf7a4c70d; 9f2d3eae88d26c29d96e42983b755940d9169cd9 builds before 3df5b9110ac08f67ccfe382fc172bfee95688eec; 9f2d3eae88d26c29d96e42983b755940d9169cd9 builds before 4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705; from 9f2d3eae88d26c29d96e42983b755940d9169cd9 before 10b7b676b78a7bd888d19729b459aad7fc1f428b; from 9f2d3eae88d26c29d96e42983b755940d9169cd9 before c524c124e3094d2de12235a513854c03d06a2b58; from 9f2d3eae88d26c29d96e42983b755940d9169cd9 before c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae; from 9f2d3eae88d26c29d96e42983b755940d9169cd9 before fed4626501c871890da287bec62a96e52da1af89	CNA record
linux linux_kernel linux:linux_kernel	from 4.19 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/a90f0815aaa9c629ac4750e7c71c357dd7f231d7	patch
https://git.kernel.org/stable/c/cb2e41e87a2893345859440017e7178bf7a4c70d	patch
https://git.kernel.org/stable/c/3df5b9110ac08f67ccfe382fc172bfee95688eec	patch
https://git.kernel.org/stable/c/4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705	patch
https://git.kernel.org/stable/c/10b7b676b78a7bd888d19729b459aad7fc1f428b	patch
https://git.kernel.org/stable/c/c524c124e3094d2de12235a513854c03d06a2b58	patch
https://git.kernel.org/stable/c/c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae	patch
https://git.kernel.org/stable/c/fed4626501c871890da287bec62a96e52da1af89	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.